[petsc-users] slepc trap for large matrix

[Kong, Fande]

On Wed, Jun 7, 2017 at 8:37 AM, Kannan, Ramakrishnan <kannanr at ornl.gov>
wrote:

> Barry,
>
> Thanks for the kind response. I am building slepc 3.7.3 and when I
> configure –with-64-bit-indices=1, I am getting the following error.
>
> ./configure --with-64-bit-indices=1 --prefix=/lustre/atlas/proj-
> shared/csc209/ramki/slepc
> ERROR: Invalid arguments --with-64-bit-indices=1
> Use -h for help
>

I think you need to do "configure --with-64-bit-indices=1"  for PETSc (Not
SLEPc).

Fande,


> When I run ./configure –h, I am getting the following options. Let me know
> if I am missing something.
>
> SLEPc Configure Help
> ------------------------------------------------------------
> --------------------
> SLEPc:
>   --with-clean=<bool>          : Delete prior build files including
> externalpackages
>   --with-cmake=<bool>          : Enable builds with CMake (disabled by
> default)
>   --prefix=<dir>               : Specify location to install SLEPc (e.g.,
> /usr/local)
>   --DATAFILESPATH=<dir>        : Specify location of datafiles (for SLEPc
> developers)
> ARPACK:
>   --download-arpack[=<fname>]  : Download and install ARPACK in SLEPc
> directory
>   --with-arpack=<bool>         : Indicate if you wish to test for ARPACK
>   --with-arpack-dir=<dir>      : Indicate the directory for ARPACK
> libraries
>   --with-arpack-flags=<flags>  : Indicate comma-separated flags for
> linking ARPACK
> BLOPEX:
>   --download-blopex[=<fname>]  : Download and install BLOPEX in SLEPc
> directory
> BLZPACK:
>   --with-blzpack=<bool>        : Indicate if you wish to test for BLZPACK
>   --with-blzpack-dir=<dir>     : Indicate the directory for BLZPACK
> libraries
>   --with-blzpack-flags=<flags> : Indicate comma-separated flags for
> linking BLZPACK
> FEAST:
>   --with-feast=<bool>          : Indicate if you wish to test for FEAST
>   --with-feast-dir=<dir>       : Indicate the directory for FEAST libraries
>   --with-feast-flags=<flags>   : Indicate comma-separated flags for
> linking FEAST
> PRIMME:
>   --download-primme[=<fname>]  : Download and install PRIMME in SLEPc
> directory
>   --with-primme=<bool>         : Indicate if you wish to test for PRIMME
>   --with-primme-dir=<dir>      : Indicate the directory for PRIMME
> libraries
>   --with-primme-flags=<flags>  : Indicate comma-separated flags for
> linking PRIMME
> TRLAN:
>   --download-trlan[=<fname>]   : Download and install TRLAN in SLEPc
> directory
>   --with-trlan=<bool>          : Indicate if you wish to test for TRLAN
>   --with-trlan-dir=<dir>       : Indicate the directory for TRLAN libraries
>   --with-trlan-flags=<flags>   : Indicate comma-separated flags for
> linking TRLAN
> SOWING:
>   --download-sowing[=<fname>]  : Download and install SOWING in SLEPc
> directory
>
> --
> Regards,
> Ramki
>
>
> On 6/6/17, 9:06 PM, "Barry Smith" <bsmith at mcs.anl.gov> wrote:
>
>
>       The resulting matrix has something like
>
>     >>> 119999808*119999808*1.e-6
>     14,399,953,920.036863
>
>       nonzero entries. It is possible that some integer operations are
> overflowing since C int can only go up to about 4 billion before
> overflowing.
>
>       You can building with a different PETSC_ARCH value using the
> additional ./configure option for PETSc of --with-64-bit-indices and see if
> the problem is resolved.
>
>        Barry
>
>
>     > On Jun 5, 2017, at 12:37 PM, Kannan, Ramakrishnan <kannanr at ornl.gov>
> wrote:
>     >
>     > I am running EPS for NHEP on a matrix of size 119999808x119999808
> and I am experiencing the attached trapped. This is a 1D row distributed
> sparse uniform random matrix with 1e-6 sparsity  over 36 processors. It
> works fine for smaller matrices of sizes with 1.2 million x 1.2 million.
> Let me know if you are looking for more information.
>     >
>     > --
>     > Regards,
>     > Ramki
>     >
>     > <slepc.e609742.zip>
>
>
>
>
>
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